Exclusive: Brazil's Petrobras refineries sale lures trading cos, PetroChina, Saudi Aramco - sources

SAO PAULO/RIO DE JANEIRO (Reuters) - Brazil's planned privatisation of eight Petroleo Brasileiro SA refineries has lured several of the world's largest trading and oil companies as prospective bidders, two sources with knowledge of the matter said.Around 20 companies have signed non-disclosure agreements granting them access to the refineries' data and signalling that they are considering a bid, the sources added, speaking on condition of anonymity to disclose private details of the sale. The..